The president of the American Bird Conservancy, Mike Parr, said the tally was "an alarming and concerning finding."
A trade group, the American Wind Energy Association, said in a statement that the figure was much lower than other causes of eagle deaths. The group said it was working with the government and conservation groups to find ways to reduce eagle casualties.
Still, the scientists said their figure is likely to be "substantially" underestimated, since companies report eagle deaths voluntarily and only a fraction of those included in their total were discovered during searches for dead birds by wind-energy companies. The study also excluded the deadliest place in the country for eagles, a cluster of wind farms in a northern California area known as Altamont Pass. Wind farms built there decades ago kill more than 60 per year.
The research affirms an AP investigation in May, which revealed dozens of eagle deaths from wind energy facilities and described how the Obama administration was failing to fine or prosecute wind energy companies, even though each death is a violation of federal law.
The Fish and Wildlife Service has said it is investigating 18 bird-death cases involving wind-power facilities, and seven have been referred to the Justice Department.
Wind farms are clusters of turbines as tall as 30-story buildings, with spinning rotors as wide as a passenger jet's wingspan. Though the blades appear to move slowly, they can reach speeds up to 170 mph at the tips, creating tornado-like vortexes.
Wind farms in two states, California and Wyoming, were responsible for 58 deaths, followed by facilities in Oregon, New Mexico, Colorado, Washington, Utah, Texas, Maryland and Iowa.
In all, 32 facilities were implicated. One in Wyoming was responsible for a dozen golden eagle deaths, the most at a single facility.
The research was published in the Journal of Raptor Research.